ABOUT ERATOS PROJECT

This project is based on a scientific collaboration : We need the measurement of a partner school to obtain the final result

This project runs from January to December. Its aim is to calculate the circumference of the Earth, reproducing Eratosthenes experiment.

Experimental activities will lead you to this result:1. Show the curve of earth's surface and the parallelism of solar rays.2. Observe the evolution of the shadow of a staff and deduce the course of the sun.3. Discover the moment of solar midday (the time when the shadow is at its shortest).4. Use a gnomon to deduce the angle of solar rays compared to the vertical.5. Use the result of the measure from a partner to calculate the circumference of the Earth